Sealing apparatus



Jan. 27, 1931. D. D. ZEROLLO 1,790,037

SEALING APPARATUS Filed Sept. 5, 1929 5 Sheets-Sheet 1 Wewrae. 4 4/2 22-29044 0 Jan. 27, 1931. D. D. ZEROLLO 1,790,037 7 SEALING APPARATUS Filed Sept. 5. 1929 s Sheets-Sheet s 7: guided with its: lower thickened end 11 in a 7 "upper limit of movement. The diameter of:

Patented Jan. 27, 1931 UNITED STATES: PATENT; OFF C IDANTEDAVIDE zERoLLo, ore-Enos, Irania- SEALING- APPABJMEU J Applicationofiled September 5, 1929,: Serial K0. 3aq,',5s, and am-a ia u r io, 1929 This invention refers to an apparatus for;

sealing letters and so on in which by themotion; of a hand lever a determined quantity of :wax will be, expelled from a, heated receptacle containing sealing wax upona. letter "and so onto be sealed and subsequently supplied with astamp; v

The, invention is now described in connection; with: a preferred form of embodie U1 ment of the invention illustrated in the drawingsinwhich: 7 1

*F-ig. 1? a view' in elevation partly in sectionof the apparatus; 7

Fig; 2 is a top; View of the same;

through. the distribution. slide; o

Fig. 4 is, a cross section according to line OfJFig. 3; r

5, and 6. are a: partial"- top v view a anda. partial longitudinal sectional-V view of the stamp bearing arm. v V "Fig; 7 shows the different positions ofthe eccentric distribution disk which correspond with the main positions of the apparatus as 5 they are diagrammatically illustrated in-Eig- 111638,.9 Midi 1'0. In these figures 1'; carries in its upper part a receptacle for-the reception. .ofsealing wax; receptacle includes an inner cylindrical container 2- upon which is threaded the cover-,3 and an outer coaxial shell at providing with; the con-v 3* is: arranged axially 1111 the receptacle. In

this: socket is coaxiallyarranged a rod: 10,

corresponding 'jbore ofthe hollow socket 9;

' upper end being secured tol a cylindrical head piece 12 also guided in a bore"of.'the

hollow socket 9. 13 is a spiral spring hearing between the head 12 and the shoulder formed in'the socket 9 in thereduction'of the internal bore of'that socket to provide for the guiding of the part 11 of the rod 10, this spring serving to maintain the rod at its Fig; 3 is; a longitudinal sectional view is, a metal: frame-V. which the 'pi'stonill corresponds with the :cylindri resistance ,7 L4 fastened upon the frame '1 to enable the regulation of' the'heatingre sistan ce. 1'5fis"a thermometer to" indicatereceptacle; temperature 7 16" is 3 an aperture provid'ed' on the cover 3,, through which-the" P61 ceptacle: scan be-supplied withv sealing wax;

The bore 8 of the b ushing fiiisnorrnallyclosed by a movable} slide l'f guided upon a plate 18 fastened upon the bushing- 6;, theplate being formed: with two "lateral; flanges 17; across lateral openings in the plate 18, where by leaf springs. 19 keepthe slid -17incontact'with the bushing 61 Thefront-part of the slide I7} is provided with a; sharp 'edgeto clear the edge .ofjthe hole 8 from wax drops Which otherwise arealikelvtodeposit there. Y This; wax materiah'then fallsinto a small 7 box 20 fastened upon the-slide. The back partiof the slide carriesia rod 21' which projects across hole Of the-"pl'ate-IS and upon i which is wound a 'heli'cal spring 22 which -norm'ally tends; to ke p f the slide in 'its' 'closed 'posit-ion.

' The'opera-t'in device 'ofjthe apparatus pre- Sents an eccentric disk '23 fastened upon the shaft 24: which can 'ber'otat'edby a hand lever.

25: Aga inst the'' circumference offthe'disk i 23- adheres: "curved; lever 26- which has its fulcrumin .27 upon the frame The lever 26-1 transmits its meson, by the rigging 28,

29,30 and 31 't0,the piston 11. The eccentric.

'23 presents; upon;its lower part two e'leva-' tions-"32 and which according-to its engagement with an inclined face of the bent lever 26 compels-twe descending motions of this il'eve-rjrl These mqtions'of the; lever 26 '"piston' llmovesgdown tefthe bore 7 and at the second motion the piston penetrates to thee'nd of'theboreTa nd expels the" sealing so insures contemporaneous descending-motions of thepiston ll'ff During the first motion the 1 wax containedinthi's bore through-the hole a a 8.; The eccentric-disk 23 presents an eleval tion; 3Q which, engages with the toothed end o-f a levee. 35"havii1gi'ts' fulcrumgin 36. The

l e ver 3j5fcarriesanarn1 37 is supplied with a bifurcated end to cooperate with an adpistable supporting plate 38 in order to hold thereon the'letter on which the seal is to be applied. The plate-e38 has a threaded shank engaging a socket 66 fastened upon the frame 1, this shank carrying a nut 67 and the socket carrying a nut 68 between which is arranged a helical spring which prevents the displacement of the plate 38 after same has been adjusted. The lever. 28 carries a leaf;

. spring 39, which engages the lever 35 and keeps the rigging 26, 28, 29, 30 and31 under tension. Upon the shaft 24 is further keyed the toothed sector '40. Thistoothed sector 40 is in engagement with a toothed-wheel 41 rotatably arranged on the frame land integral with a toothed sector .42 at its turn in engagement with a toothed sector 43, which hasits fulcrum in 44. The sector 43 carries a segmental cam 45. This cam 45 during the ascending motion of thesector contacts with; a roller 46 which is arranged at the end of a lever 47', the other end of which is fastened upon a lever 47 which has its fulcrum in 36. The cam 45 swings the lever 47 and thus moves the slide 17, coupled through a rod 48 with the lever .47, so that the s1ide17 uncovers the hole 8. The arrangement of the cam 45-is such that the uncovering of the hole 8 takes place betweenv the two .prementioned motions of the piston 11. Uponthe sector 7 43 is also arranged an arm 70 which carries at its free end'a toothed wheel-49, arranged upon a pin 50 upon which is also keyed a roller 51 which carries :an exchangeable stamp 52. This rollerpresents on its surface two spherical cavities 53, with whichcan be brought in engagement aball 54 which is' under the pressure of a spring 55. The stamp is thus held in either of two relative positions against casual displacement. the inoperative position of the apparatus the stamp '52 is in contact with a sponge 56, which is kept in wet condition by meansof areceptacle 57 45 filled. with oil fastened on the frame 1. If

.: the toothed element 43 is. displaced upwardly, the wheel 49 engages therack 58'and moves the stamp 52 to an operative position; :Upon w an arm 59 which is loosely arranged upon the fulcrum of the sector 42'is fastened a piston rod with corresponding. piston '60, which rod has its fulcrum upon the arm 59 int-9. This piston is arranged in a dash pot cylinder 61 provided with an extension 62 at its turn supplied with a groove 71 traversed by a pin 63 which pin is fastened .uponjthe jsector 43.

.Thus it is possibleto damp the motionof' the 'moving parts both in movement toward :operative and inoperativepositionsl V y,

- 64 is astop'screw'bytmeans of which'the i travel of the-piston as wellasthetravial of T operation are illustrated in the Figures 8, 9 and 10.

By the rotation of the eccentric disk 23 from its position of Fig. 1 to the position as shown in Fig. 8, the piston 11' movesto the upper end of the bore 7, the bifurcated paper holder 37. drops upon the plate 38 by the rising of the lever 35 on account of the elevation 84 of the: eccentric disk 23.. At the same time thestamp 56 leaves its inoperative position and moves towards the rack 58, while the cam 45 has reached the roller'46 of the lever 47,v without at this time compelling a displace ment of the slide 17. Inrotatinglfurther the toothed sector 43 the cam 45 will now in-' fiuence the r'oller46 and the slide will move in its open position. At the same time theelevation -33'of the eccentric disk 23 pushes against the inclined face of the curved lever 26. In the meantime the pin 63 of the sector43 has reached the end of the groove 71 ting closed under the effect of the spring22. 1'00 The stamp 52 is now pressed upon the-sealingwax dropped on the paper; A rotation of-the hand lever 25in the opposite direction brings the parts back in the position of departure. During the rotation of the sector downwardly the cam 54 will not influence the lever 47 as the same during the descending motion passes on I at the right of: the roller46. The apparatus canalso be equipped with as well as by motor drive.

I In asealing apparatus of the type specified 'a wax containing heated receptacle, a piston for expelling the wax from this receptacle, a

movable slide controlling the discharge of the wax from the receptacle, a'cylinder open at its upper end arranged in the bottom of the receptacle for the reception of the sealing wax to be expelled having adiameter corre sponding to that of the expelling piston and the open cylinderterm'inating at-its lower end with an exitiopening 'controlledby the slide.

thesector-j42 canbe regulated. 65 is a lead loaded pendulum serving. to bring-the apparatus to the vertical position. The different phases which the machineassumes during its means so 'as toallow' its operation a-pedal' DANTE Davina ZE'ROLILOQ 

